added array usage for same operation on multiple objects via chainqueries + adde…

…d compatibility for arbitrary amount of parameters

lib/sequelize/Sequelize.js

@@ -61,19 +61,37 @@ var classMethods = {
     
     return Sequelize.Helper.evaluateTemplate(query, values)
   },
-  chainQueries: function(queries, callback) {
+  chainQueries: function( ) {
     // queries = [{method: object}, {method: object, params: [1,2,3]}, {method: object}]
+    // example: Sequelize.chainQueries({save: a}, {destroy: b}, callback)
+    // example: Sequelize.chainQueries({save: [a, b]}, callback)
+    
+    var queries  = [],
+        callback = null
+    
+    for(var i = 0; i < arguments.length; i++) {
+      var arg = arguments[i]
+      if(typeof arg == 'function') callback = arg
+      else if(Array.isArray(arg)) arg.forEach(function(o) { queries.push(o) })
+      else queries.push(arg)
+    }
+
     var executeQuery = function(index) {
-      var queryHash = queries[index]
-      var method = Sequelize.Helper.Array.without(Sequelize.Helper.Hash.keys(queryHash), "params")[0]
-      var object = queryHash[method]
-      var iterator = function() {
+      var queryHash = queries[index],
+          method    = Sequelize.Helper.Array.without(Sequelize.Helper.Hash.keys(queryHash), "params")[0],
+          object    = queryHash[method],
+          iterator  = function() {
             if(queries.length > (index + 1)) executeQuery(index + 1)
             else if (callback) callback()
           }
           
-      object[method].apply(object, Sequelize.Helper.Array.join(queryHash.params || [], [iterator]))
+      if(!Array.isArray(object)) object = [object]
+      
+      object.forEach(function(o) {
+        o[method].apply(o, Sequelize.Helper.Array.join(queryHash.params || [], [iterator]))
+      })
     }
+    
     if(queries.length > 0) executeQuery(0)
     else if (callback) callback()
   }